B1179BS-6R8N=P3 Equivalent & Substitute Parts

Part Overview

The B1179BS-6R8N=P3 is a 6.8 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 4.1 A continuous current with a maximum DC resistance of 24 mOhm. This component is designed for surface mount applications in compact form factors. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring this inductance value and current rating.

Substiute Parts

B1179BS-6R8N=P3

Murata ElectronicsIn Stock: 782B1179BS-6R8N=P3 Datasheet

Current PartRFQ

DR125-6R8-R

Eaton - Electronics DivisionIn Stock: 1652DR125-6R8-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B1179BS-6R8N=P3 is determined by the following critical parameters:

• Inductance Value: Must be 6.8 µH to maintain circuit functionality
• Current Rating: Must meet or exceed 4.1 A continuous current requirement
• DC Resistance: Lower or equal DCR values are acceptable; higher values may impact circuit efficiency
• Saturation Current: Must support the operating current without core saturation
• Core Type & Shielding: Ferrite core with shielding required for electromagnetic compatibility
• Mounting Type: Surface mount configuration mandatory for PCB integration
• Operating Temperature: Must support the -40°C ~ 85°C range or broader

The DR125-6R8-R from Eaton Electronics Division qualifies as a direct substitute based on matching inductance, exceeding current and saturation ratings, providing superior DC resistance characteristics, and maintaining compatible surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

The DR125-6R8-R is the qualified substitute for the obsolete B1179BS-6R8N=P3. Selection should be based on the following factors:

Product Status: The B1179BS-6R8N=P3 is obsolete, making the DR125-6R8-R the active alternative from the manufacturer's recommended substitute list.

Electrical Performance: The DR125-6R8-R exceeds the original part's current rating (6.64 A vs. 4.1 A) and saturation current (8.68 A vs. 5 A), providing improved headroom. The lower DC resistance (12.3 mOhm vs. 24 mOhm) reduces power dissipation and heat generation.

Compliance & Certifications: The DR125-6R8-R is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The original part's compliance status is not specified.

Temperature Range: The DR125-6R8-R supports -40°C ~ 125°C, extending the upper operating limit by 40°C compared to the original -40°C ~ 85°C specification.

Physical Considerations: The substitute is larger (12.50 mm x 12.50 mm x 6.00 mm vs. 10.40 mm x 10.40 mm x 4.00 mm). PCB layout verification is required to confirm fit within available space constraints.

Tolerance: The DR125-6R8-R offers tighter tolerance (±20% vs. ±30%), improving circuit predictability.

Frequently Asked Questions (FAQ)

Q: Can the DR125-6R8-R directly replace the B1179BS-6R8N=P3 in all applications?

A: The DR125-6R8-R is electrically compatible as a substitute. However, the larger physical dimensions (12.50 mm x 12.50 mm x 6.00 mm vs. 10.40 mm x 10.40 mm x 4.00 mm) require PCB layout verification to confirm fit within the available mounting area.

Q: What are the key advantages of using the DR125-6R8-R substitute?

A: The substitute provides higher current rating (6.64 A vs. 4.1 A), higher saturation current (8.68 A vs. 5 A), lower DC resistance (12.3 mOhm vs. 24 mOhm), extended temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C), tighter inductance tolerance (±20% vs. ±30%), and active product status with ROHS3 compliance.

Q: Are there any electrical performance trade-offs when substituting?

A: No trade-offs exist. The DR125-6R8-R meets or exceeds all electrical specifications of the original part. The lower DC resistance and higher current ratings represent performance improvements.

Q: What is the impact of the larger package size?

A: The substitute requires 20% additional length and width (12.50 mm vs. 10.40 mm) and 50% additional height (6.00 mm vs. 4.00 mm). PCB routing and component placement must be re-evaluated to accommodate the larger footprint.

Q: Is the inductance value identical between the two parts?

A: Yes, both parts are rated at 6.8 µH with inductance tested at 100 kHz. The DR125-6R8-R offers tighter tolerance (±20%) compared to the original (±30%).

Q: What packaging formats are available for the DR125-6R8-R?

A: The DR125-6R8-R is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.